/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package grails.test.mixin

import grails.persistence.Entity
import grails.testing.gorm.DomainUnitTest
import spock.lang.Specification

/**
 * Tests the usage of unique contstraint in unit tests
 */
class DomainClassWithUniqueConstraintSpec extends Specification implements DomainUnitTest<Group> {

    void "Test that unique constraint is enforced"() {
        given:"An existing persisted instance"
            new Group(name:"foo").save(flush:true)

        when:"We try to persist another instance"
            def g = new Group(name:"foo")
            g.save()

        then:"a validation error occurs"
            g.hasErrors()
            Group.count() == 1
    }
}

@Entity
class Group {
    String name
    static constraints = {
        name unique:true
    }
}
